Dual Slave Mode - Siemens SINAMICS G115D Operating Instructions Manual

6.7.2

Dual Slave mode

In Dual Slave mode, eight bits are available for the communication between the AS-i master
and the converter. The eight bits are used to transfer process data. In parallel, the control can
start a diagnostic request via AS-i.P0.
The following default interface settings are possible:
• Macro 31: AS-i Dual Slave with fixed setpoint
• Macro 34: AS-i Dual Slave with fieldbus setpoint
Macro 31: AS-i Dual Slave with fixed setpoint
The control accesses the two slaves of the converter each via four bits.
Via Slave 2, in accordance with profile 7.A.E, the control specifies the speed setpoint via the
motor control bits (AS-i.DO0 ... AS-i.DO2).
Via Slave 1, the control sends data in cyclical or acyclical mode, in accordance with profile
7.A.5.
The control requires one bit per slave in order to specify the slave.
Macro 31, Slave 2 with profile 7.A.E: Control → Converter
• AS-i.DO0
• AS-i.DO1
• AS-i.DO2
• AS-i.DO3
If the control specifies the speed setpoint, the converter replies:
Macro 31, Slave 2 with profile 7.A.E: Converter → control
• p2080[0] = 53.13
• p2080[1] = 899.11
• p2080[2] = 722.0
• p2080[3] = 722.1
If the control sends a diagnostic request via AS-i.P0, the converter replies with the currently
pending fault or alarm messages.
(Page 167)
SINAMICS G115D distributed drive
Operating Instructions, 12/2020, FW V4.7 SP13, A5E48681219B-002
→ p1020.0 = 2093.0
→ p1021.0 = 2093.1
→ p1022.0 = 2093.2
→ Select Slave A or Slave B, interconnected internally
Fixed speeds via the motor control bits and response in the converter (Page 167)
PLC ready to switch on
Pulses enabled
State DI0
State DI1
Alarm and fault messages via RP0 ... RP3 from the converter to the AS-i master
Advanced commissioning
6.7 Drive control via AS-i
Fixed speed bit 0
Fixed speed bit 1
Fixed speed bit 2
→ AS-i.DI0
→ AS-i.DI1
→ AS-i.DI2
→ AS-i.DI3
165